import numpy as np
num = np.array([
    [1,2,3,4,5],
    [6,7,8,9,10]
])
print(num.shape)
print(num.ndim)
a=np.zeros((3,5))#以0填充
print(a)
b = np.full((2,3),fill_value=100)#以100填充
print(b)